Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020	Oct. 31, 2019
Secured notes
Debt Instrument [Line Items]
Debt instruments, carrying value	$ 300,000
Level 2 | Secured notes
Debt Instrument [Line Items]
Debt instruments, carrying value	400,000
Debt instruments, fair value	400,000
Level 2 | Term Loan
Debt Instrument [Line Items]
Debt instruments, carrying value		$ 300,000	$ 300,000
Debt instruments, fair value		300,000	300,000
Level 2 | Revolving credit facility
Debt Instrument [Line Items]
Debt instruments, carrying value			279,880
Debt instruments, fair value			279,880
Level 2 | Unsecured Loan
Debt Instrument [Line Items]
Debt instruments, carrying value	7,232	2,860	2,948
Debt instruments, fair value	7,232	2,860	2,948
Level 2 | Overdraft facilities
Debt Instrument [Line Items]
Debt instruments, carrying value	2,885
Debt instruments, fair value	2,885
Level 3 | LVMH Note
Debt Instrument [Line Items]
Debt instruments, carrying value	106,361	102,009	100,623
Debt instruments, fair value	$ 99,832	$ 95,126	$ 100,825